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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-6665) Violation of deferred foreign key not detected on commit
Date Tue, 15 Jul 2014 22:43:05 GMT
Knut Anders Hatlen created DERBY-6665:
-----------------------------------------

             Summary: Violation of deferred foreign key not detected on commit
                 Key: DERBY-6665
                 URL: https://issues.apache.org/jira/browse/DERBY-6665
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.11.0.0
            Reporter: Knut Anders Hatlen


See the following script:

{noformat}
ij version 10.11
ij> connect 'jdbc:derby:memory:db;create=true';
ij> create table t1(x int primary key);
0 rows inserted/updated/deleted
ij> create table t2(x int primary key);
0 rows inserted/updated/deleted
ij> create table t3(x int, constraint fk1 foreign key (x) references t1 initially deferred,
constraint fk2 foreign key (x) references t2 initially deferred);
0 rows inserted/updated/deleted
ij> insert into t1 values 1;
1 row inserted/updated/deleted
ij> autocommit off;
ij> insert into t3 values 1;
1 row inserted/updated/deleted
ij> insert into t2 values 1;
1 row inserted/updated/deleted
ij> delete from t1;
1 row inserted/updated/deleted
ij> commit;
ij> select * from t1;
X          
-----------

0 rows selected
ij> select * from t2;
X          
-----------
1          

1 row selected
ij> select * from t3;
X          
-----------
1          

1 row selected
{noformat}

Since T3.X contains a value (1) that is not present in T1, the foreign key FK1 is violated,
and the COMMIT statement should have failed.



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